A 1/8 inch pilot hole followed by a 3/4 inch dia hole to be drilled in end of a 3.875 inch dia shaft.Calculate the RPM of each drill.- i, P# C& `/ p( W/ n7 g2 y
Note: CS=80 % [5 j; i' p6 i+ B' v( P # ]+ `/ g% |% ~3 JRPM 1/8=1 `( e, i) P8 A' P) d7 @8 D. I/ i
RPM 3/4= + b" T5 Q( S, } _+ P, p9 D6 J1 c2 e; i
Thanks a lot.
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发表于 2007-11-24 20:29
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